When Nicole leaves the house in her trance her hair is straight. When she gets to Shane her hair is crimped.
In the scene where Angus Sutherland and Autumn Reeser leave the party to go for a motorcycle ride it's raining in the shots of them on the motorcycle, but the road is completely dry during all the point-of-view shots from the motorcycle.
When Shane tells Chris that they are going surfing at the reef, to which Chris replies there's no moon. The moon is clearly visible in the surfing scene that follows.
When Angus Sutherland and Autumn Reeser leave the party to go for a motorcycle ride, their hair is falling straight instead of blowing in the wind.
When Nicole goes to meet the Shane at the nest, her hair is changed from ringlets to straight after they kiss.
If the vampires can't cast a reflection, they shouldn't be able to be recorded either although you can see them being recorded several times in the video camera.
When Nichole sleeps with Shane, he removes her red bra. The breasts are covered with white pads. Shortly after this, a white bra is visible on the actress as well.
Camera is visible in the cop car that gets t-boned during the initiation chase.